Well-drilling bit.



G. L. LANE.

WELL DRILLING BIT.

APPLiCATION FILED AUGJ, 191a.

LINVE/VTOR Qybbmyz A 1701mm WI TNESSES 1 LGRE'NFZO LANE. OF "WILLLAMISTSVJN; NEST VIRGINZA.

\VELL-IDRILLING BIT.

Application filed August 1, 1918.

Ii) 12M Mimi/i it may concern:

iw it known that l, (iZiURHE L. LANE, a on oi the i'uitcd r-ltatcs. and a resident fi'i'illiauistown. in the county of Wood and 'lalc oi ll'cst Virginia. have inrcntnd a now and mproved il'cll-Drilling iii. of which ilw iollowing is a full. clear. and exact dcption. his invention rclatcs to deep well rock drilling bits and, has parirular reference to tho formation or design of the body of the drilling bit adapting it for rrliabiliiy and t-ll'i-wtircncss in practice.

12 'tlw objcrk of tho inwntion. thorotor-e, to so conalrurl a drilling bit as to Ibo {:rcairst r-liicimu-y and durability no tool and in rvducv to a minimum tho v ()ldjhr drill llOlt becoming rroolwd "the bit will go through the casing the hole largo enough to allow the follow.

in foregoing: and othcr ohjccts in tho inrcntion consists in tin arrang nand wunbinn'liou of parts lu rcinattor rilu'ad aud rlain'icd. and while the invcn iiou is not rcstrictvd to the r-Nactdrtails'ot' uous'iriu-tion disrloscd or suggested heroin, all for iilt purposc oi illustrating a practirul cnibod' zu-nkthm'coi i'u'ltarucc, is bad. to thr aci-oiupa'uying drawings in wh ch liin rc'lm'curo characters drsiguato tho same part in tho FEYPTzll Kiowa. and in which Figaro 'i is a side elevation of my in1- pror d drillii'i bit;

Fig". 2 a. roar (duration;

l igg. I3 is a trout: vloration; and

l ig". i is a bottom plan View with :1 dia grain to indioatc tho rclaiiou of tho drillin bit to tho drillrd huh.

llct 'crring now more particularly to an lrawingg's. i show a drilling bit llt'lYlllQ a mdy it: with a coupling nipplc ll and pro riiu-d at; its actirc cud with a plurality of points. ouch haying. a wab or wing. structure supporting it.

ilur of thc rbivi i'vuturcs of tho novelty of this iuiprorcincnt lies in the crntcr point 1; arraugod ii-crisply in tho longgitiulinal axis of thr tool and bring hounded hy thrco iii-- ('lllHll i'arcis '13. H. and 13. The inaction lino of each two adja vnt tacvts is inclinrd upwardly from tho point 'ihc strurturc supporting tho point 1; and its Faccts mnstitutos a main rib 16 of rclatiyuly hoary mush-notion.

Specification of Letters IPa'tcnt.

Patonteod Mari 13, 1.91%

Serial No. 112,515. I

In addition to the parts just described, I provide two cutting points 17 and 18, each hound on its bottom by two facets 19 and 20. Zlhc meeting line for each pair of facets l9 and for each point 17 or 18 is indicated at- 21 and it. inclines upwardly slightly where intc rsccts the other line 2 and tho neotiug :mc 22 between the facets l-l and .l') at the point 237 This point, it will be observed, is eccentric to the point 12 and longitudinal axis of the drilling bit.

I wish to point out particularly that the point 12 extends materially below the horizontal plane of the points 17 and 18, whereby tho point 12 is given an effective load sci-ring to hold the tool for operation in a dcfinitu fixrd lino coinciding with the axis of this, tool. Tho inclined facet 13 adjacent the point 12 scrvcs' to cause the points .17 and 15% to be crowded laterally. with to sport to the center of the hole and cause an undercut ctl cct oi the tool, with, respect to the cutting points 1? and 18, The point 17 carried upon the lower and of a Web 17 whilc tho other point 18 is carried on a similar \Ytli 18'. Those webs extend practically throughout the whole lcugih of the body or rib 16 and illilhe a rigid and strong tool.

As notcd in Fig". l. each of the ribs. or wobs is rylimlrical in 0nd view. the axis of the curvature thereof being substantially coincident with the point; 93 where the line 92 intcrsccts the lines 21. The cdgos, there- 'form oi. the side points or cutting" portions of tho tool represented by the lines '24 and produce a shearing effect on the side p01 tions of the hoic formed through the rock. The cutting edge and point portions of the webs 17 and 18 project radially somewhat, beyond the main surfaces of these parts.

I claim: 1

'1. The herein described drilling bit comprising a main central rib having a leading point at its lower end in alincmcnt with the axis of the rib and drill. said point being fornual by the intersection of three triangular lilt'tlS. said drill also including two other web mciubors. cach baring a cutting point at its lower end projecting radially outother two cutting points outwardly with re- Hui, an.

=1)? point propel 'lQ bOCi and Wfiivai and a pair "h than. the wildly from the twain 3.10113, was ()i said webs having at its (and an outwardly flared muting minf; sm'x'ii'ig to form an undercut Mfwrtx in Um (Elevation of die tool. each of the lattuimontinned. cutting points being vfFoc-tivo at the periphery of the tool while the point first mentioned is effective in the center of the hole and projects; nmferinliy below the horizonitnl plane 0f the two side pfiints.

LIIRE NZU LANE. 

